The oldest rocks on the ocean floor would be those at the colliding edge of the plate boundary.
Answer 2: The oldest of all oceanic rocks are on the Asian side of the pacific plate.
The oldest rocks found on the ocean's crust, or the oceanic lithosphere, are located farthest away from a mid ocean ridge. Since mid ocean ridges create new oceanic crust, the oldest crust is naturally the farthest away and would be near continental crust.
Sea floor rock is created at (and therefore youngest at) the mid oceanic ridges. From there it gets progressively older away form the ridges and is oldest adjacent to the continental margins bordering the ocean.
No, the rocks forming the oceanic crust and sea floor are actually relatively young in geological terms.
The oldest rocks are those that form the centres of continental lithosphere known as cratons formed of very very old, highly metamorphosed crystalline basement rock.
The oldest rocks on the ocean floor are those that are being subducted under less dense crust and into the mantle at convergent plate margins.
The oldest rocks are actually on land but in the ocean crust they would be the rocks closest to land. The mid-ocean ridge forms new rocks. They are usually located in the middle of the ocean.
The youngest rocks will be formed from cooled magma. Therefore volcanism, either on the continental crust or oceanic crust will create the youngest rocks.
Somewhere at the bottom of the Marianas Trench you would find the oldest rock of the oceanic crust. Somewhere else, however, there are older rocks on the ocean floor--those deposited by icebergs that have broken off of glaciers. Those erratic rocks could be much older than the oldest oceanic crust.
The oldest rocks are found on land.
The youngest part of the ocean floor is found at conservative plate boundaries where oceanic crust is pulled apart and magma rises from the mantle to form new oceanic crust.
200 million
The oldest rocks are actually on land but in the ocean crust they would be the rocks closest to land. The mid-ocean ridge forms new rocks. They are usually located in the middle of the ocean.
The youngest rocks will be formed from cooled magma. Therefore volcanism, either on the continental crust or oceanic crust will create the youngest rocks.
Somewhere at the bottom of the Marianas Trench you would find the oldest rock of the oceanic crust. Somewhere else, however, there are older rocks on the ocean floor--those deposited by icebergs that have broken off of glaciers. Those erratic rocks could be much older than the oldest oceanic crust.
Somewhere at the bottom of the Marianas Trench you would find the oldest rock of the oceanic crust. Somewhere else, however, there are older rocks on the ocean floor--those deposited by icebergs that have broken off of glaciers. Those erratic rocks could be much older than the oldest oceanic crust.
The oldest rocks are found on land.
Somewhere at the bottom of the Marianas Trench you would find the oldest rock of the oceanic crust. Somewhere else, however, there are older rocks on the ocean floor--those deposited by icebergs that have broken off of glaciers. Those erratic rocks could be much older than the oldest oceanic crust.
The youngest part of the ocean floor is found at conservative plate boundaries where oceanic crust is pulled apart and magma rises from the mantle to form new oceanic crust.
That is normally where they would be found; farthest away from the point at which they were initially formed.
Nope. The oldest rocks are located on continents, usually away from the ocean. The mid-ocean ridges are, in fact, home of some of the youngest rocks. The reason for this is what is called sea-floor spreading. Mid-ocean ridges form at places where oceanic plates diverge, or move apart. As this happens, magma rises from within the Earth to fill the gap. The magma cools and solidifies, creating new seafloor. This process continues as the plates continue to spread apart.
200 million
The ocean basins are the result of tectonic forces and processes. All of the ocean basins were formed from volcanic rock that was released from fissures located at the mid-oceanic ridges. The oldest rocks found in these basins are approximately 200 million years old. This is a lot younger than the oldest continental rocks which have ages greater than 4 billion years. The reason for this discrepancy is simple. Tectonic processes destroy old oceanic rocks! Oceanic rock is returned to the Earth's mantlewhen oceanic crust is subducted. Many of these subduction zones occur at the continental marginswhere oceanic crust meets continental crust. Subduction also creates the ocean's deep trenches.
they are located at the those located at the fault in the bottom of the ocean because it is a volcano and produces new rock everytime the lava cools.